1994 Johnson/Evinrude "ER" 9.9 thru 30 outboards Service Repair Manual P/N 500607, Page 159Get this manual
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1221 9 the piston in two locations, 90 apart from each other, 's In(3 mm) above the bottom of the piston skirt
1241 12 Use feeler gauge to check groove side clearance on the
lower s